##  http://www.crummy.com/software/BeautifulSoup/bs4/doc/index.zh.html



def prase():
    import httplib2
    h = httplib2.Http('.cache')
    from bs4 import BeautifulSoup
    html_doc = """
                <html><head><title>The Dormouse's story</title></head>
                <body>
                <p class="title"><b>The Dormouse's story</b></p>

                <p class="story">Once upon a time there were three little sisters; and their names were
                <a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,
                <a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and
                <a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;
                and they lived at the bottom of a well.</p>

                <p class="story">...</p>
                """
    soup = BeautifulSoup(html_doc)
    print soup.p

    r,c = h.request('http://www.baidu.com','GET')
    soup = BeautifulSoup(c)
    print soup.prettify()

if __name__ == "__main__":
    from bs4 import *
    a = 'abcd'
    prase()